Diketene is an organic compound with the molecular formula C4H4O2, and which is sometimes written as (CH2CO)2. It is formed by dimerization of ketene,...
9 KB (863 words) - 09:58, 25 June 2024
may be prepared by the hydrolysis of diketene. Its esters are produced analogously via reactions between diketene and alcohols, and acetoacetic acid can...
11 KB (1,055 words) - 08:51, 24 August 2024
[(C6H4)(CO2)2(C2H4)]n + 2n CH3OH A subset of transesterification is the alcoholysis of diketene. This reaction affords 2-ketoesters. (CH2CO)2 + ROH → CH3C(O)CH2CO2R Alkenes...
45 KB (4,778 words) - 01:40, 26 August 2024
work on the reaction in 1887. The reaction has often been displaced by diketene-based chemistry, which affords acetoacetic esters. At least one of the...
7 KB (627 words) - 23:49, 14 February 2024
large scale, methyl acetoacetate is industrially produced by treatment of diketene with methanol. Methyl acetoacetate has low toxicity to animals. It is highly...
3 KB (116 words) - 01:12, 16 August 2024
Lonza converted most of its ketene to diketene, which was then converted to a range of chemical precursors. Diketene capacity rose to 18'000t per year in...
19 KB (1,824 words) - 05:56, 10 June 2024
propen-2-yl acetate: At room temperature, ketene quickly dimerizes to diketene, but the ketene can be recovered by heating: Ketenes can react with alkenes...
11 KB (1,294 words) - 18:49, 13 July 2024
large scale, ethyl acetoacetate is industrially produced by treatment of diketene with ethanol. The small scale preparation of ethyl acetoacetate is a classic...
8 KB (686 words) - 23:38, 14 August 2024
dyes and pigments. For example 4-amino-2-benzimidazolinone condenses with diketene to give the acetoacetanilide, which undergoes diazo coupling with various...
3 KB (188 words) - 21:44, 16 January 2024
Chloroacetone may be synthesized from the reaction between chlorine and diketene, or by the chlorination of acetone. Chloroacetone is used to make dye couplers...
6 KB (380 words) - 12:19, 27 June 2024